(E)-2,3-Dihydro-3-((4-hydroxy-3-methoxyphenyl)methylene)-4H-1-benzopyran-4-one 132794-01-5 4-18-00-01834 (Beilstein Handbook Reference) 4H-1-Benzopyran-4-one, 2,3-dihydro-3-((4-hydroxy-3-methoxyphenyl)methylene)-, (E)- BRN 0026921